Bush VHF 80C - advice needed. - UK Vintage Radio Repair and Restoration Discussion Forum

llebyat66 · 17th Feb 2024, 12:07 pm

Hi Guys

I have one of the above radios which has been working fine until yesterday, when it went with a bang, when switched on.

Investigation shows what is left of a capacitor across the mains switch. Having looked at information I can find it would appear to be a 500v 0.02uf capacitor, but am not sure what type (thinking ceramic). I am having very little luck at finding one in the UK and would as you guys with more knowledge than me know of a suitable replacement?

Thanks in advance

Station X · 17th Feb 2024, 12:16 pm

Hello and welcome to the forums.

I assume that with the blown capacitor snipped out the radio continues to work?

As this capacitor is wired across the mains supply it needs to be replaced with a Class X type. Remember 'X' is a cross.

https://www.cricklewoodelectronics.c...Capacitor.html

Don't worry about the reduce working voltage. These capacitors are specifically designed to be connected across the mains supply.

paulsherwin · 17th Feb 2024, 12:55 pm

The value of this capacitor isn't at all critical, and as Graham suggests, the radio will probably work perfectly well with no cap there at all. If it doesn't work then there is an additional problem, most likely switch contacts damaged when the cap failed (though check the plug fuse too).

matthewhouse · 18th Feb 2024, 11:23 pm

It would be worth checking/replacing the audio coupling capacitor if this set has not been previously restored, while you are in there.

17th Feb 2024, 12:07 pm	#1
llebyat66 Diode Join Date: Sep 2023 Location: Leeds, West Yorkshire, UK. Posts: 1	Bush VHF 80C - advice needed. Hi Guys I have one of the above radios which has been working fine until yesterday, when it went with a bang, when switched on. Investigation shows what is left of a capacitor across the mains switch. Having looked at information I can find it would appear to be a 500v 0.02uf capacitor, but am not sure what type (thinking ceramic). I am having very little luck at finding one in the UK and would as you guys with more knowledge than me know of a suitable replacement? Thanks in advance

17th Feb 2024, 12:16 pm	#2
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,290	Re: Bush VHF 80C - advice needed. Hello and welcome to the forums. I assume that with the blown capacitor snipped out the radio continues to work? As this capacitor is wired across the mains supply it needs to be replaced with a Class X type. Remember 'X' is a cross. https://www.cricklewoodelectronics.c...Capacitor.html Don't worry about the reduce working voltage. These capacitors are specifically designed to be connected across the mains supply. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

17th Feb 2024, 12:55 pm	#3
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 28,012	Re: Bush VHF 80C - advice needed. The value of this capacitor isn't at all critical, and as Graham suggests, the radio will probably work perfectly well with no cap there at all. If it doesn't work then there is an additional problem, most likely switch contacts damaged when the cap failed (though check the plug fuse too).

18th Feb 2024, 11:23 pm	#4
matthewhouse Octode Join Date: Jul 2006 Location: Willand, Devon, UK. Posts: 1,023	Re: Bush VHF 80C - advice needed. It would be worth checking/replacing the audio coupling capacitor if this set has not been previously restored, while you are in there.